Home / 1,622.40-2,419.68-1,449.60

Finding the Fourth Proportional to 1,622.40, 2,419.68 and 1,449.60

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Solution

The fourth proportional to 1,622.40, 2,419.68 and 1,449.60 is: 2,161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.40 : 2,419.68 = 1,449.60 : x
  2. Step 2: Convert to fraction form
    1,622.40/2,419.68 = 1,449.60/x
  3. Step 3: Cross multiply
    1,622.40x = 2,419.68 × 1,449.60
  4. Step 4: Simplify right side
    1,622.40x = 3,507,568.13
  5. Step 5: Solve for x
    x = 3,507,568.13/1,622.40
  6. Step 6: Final answer
    x = 2,161.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.